Error while performing database login with the sqljdbc driver:Unable to create connection. Check your URL.
從微軟官網下載jdbc驅動包sqljdbc4，運行sqljdbc_4.0.2206.100_chs.exe，將驅動包解壓到了Microsoft JDBC Driver 4.0 for SQL Serv ...
原文：[FAQ][Hardhat] Error HH501: Couldn't download compiler version 0.8.0. Please check your connection.
當使用npx hardhat compile 命令編譯智能合約時，會先下載你在hardhat.config.js 配置中對應版本的solidity 編譯器。 當網絡不可達時，就會提示無法下載的錯誤。 至少有兩種方式可以解決： . 通過指定環境變量 HTTP PROXY 或 HTTPS PROXY 的方式。 https: github.com nomiclabs hardhat issues ht ...
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